JP2010244861A - Seat heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller in a comfortable seat heater capable of quickening the rise time, and does not allow sensation of temperature change, when a temperature is stabilized. <P>SOLUTION: This seat heater includes a heater temperature detecting part 2, a temperature-setting part 3, a control part 4, a voltage variable part 5, an electric power source-on/off part 6, and an ambient temperature detecting part 7. The control part 4 detects a supply electric power source voltage; computes a deviation between a heater temperature detected by the heater-temperature detecting part 2 and a set temperature set by the temperature setting part 3; and controls variably a heater voltage to make the fastest rising, while overshooting of the heater temperature at the lead-up time is restrained, so as to provide the seat heater capable of stepping up the heater voltage without depending on the supply electric power source voltage, to quicken the rise time, capable of controlling variably the heater temperature to restrain the overshooting of the heater temperature at the rise time and not allowing the sensation of temperature change, when the temperature is stabilized. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seat heater used as a heating heat source or the like of an automobile seat device.

  Conventionally, in this type of seat heater, the control device controls the heater temperature only by turning on / off the supply voltage.

  That is, in FIG. 5, from the temperature detection unit 102 of the heater 101, the temperature setting unit 103, the control unit 104 that compares the temperature setting and the heater temperature, and controls energization on / off, and the power on / off unit 105. (For example, refer patent document 1).

JP 2004-214000 A

  However, since the heater temperature is controlled only by turning on / off the supply voltage in the conventional configuration, the rise time depends on the supply voltage, and the rise time cannot be shortened. For example, when it is mounted on a seat device for an automobile, the seating feeling is poor.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a comfortable seat heater control device that has a fast rise time and does not feel a temperature change when the temperature is stable.

  In order to solve the conventional problem, a seat heater of the present invention includes a heater temperature detection unit that detects a temperature signal from a thermistor disposed in the vicinity of the heater, a temperature setting unit that sets a temperature of the heater, A control unit for controlling the heater temperature; a voltage variable unit for varying the heater voltage; a power on / off unit for turning on / off the heater voltage; and an ambient temperature detection unit for detecting the ambient temperature. The heater detects the supply power supply voltage, calculates the deviation between the heater temperature detected by the heater temperature detection unit and the temperature setting of the temperature setting unit, and suppresses the heater temperature overshoot at the time of startup so that the startup is fastest The voltage is variably controlled.

  This makes it possible to boost the heater voltage and increase the rise time without depending on the supply power supply voltage, variably control the heater voltage to suppress overshoot of the heater temperature at the rise, and feel no temperature change when the temperature is stable Can provide comfort.

  The seat heater control device of the present invention can provide a comfortable feeling without a change in temperature when the rise time is fast and the temperature is stable.

1 is a block diagram of a seat heater control device according to Embodiment 1 of the present invention. Flowchart of seat heater control device in Embodiment 1 of the present invention Flowchart of seat heater control apparatus in Embodiment 1 of the present invention Flowchart of seat heater control apparatus in Embodiment 1 of the present invention Block diagram of a conventional seat heater control device

  According to a first aspect of the present invention, there is provided a heater temperature detection unit that detects a temperature signal from a thermistor disposed in the vicinity of the heater, a temperature setting unit that sets the temperature of the heater, a control unit that controls the heater temperature, and a heater voltage. A voltage variable section that varies the power, a power on / off section that turns on and off the heater voltage, and an ambient temperature detection section that detects the ambient temperature, and the control section detects the supply power voltage and detects the heater temperature. The difference between the heater temperature detected by the heater and the temperature setting of the temperature setting section is calculated, and the heater voltage is variably controlled so that the rise is fastest while suppressing the overshoot of the heater temperature at the rise. .

  This makes it possible to boost the heater voltage and increase the rise time without depending on the supply power supply voltage, variably control the heater voltage to suppress overshoot of the heater temperature at the rise, and feel no temperature change when the temperature is stable Can provide comfort.

  In the second aspect of the invention, in particular, the control unit of the first aspect of the invention can save energy while maintaining comfort by automatically correcting the temperature setting value according to the atmospheric temperature detected by the atmospheric temperature detection unit.

  In a third aspect of the invention, the seat heater of the first or second aspect of the invention is mounted as a heating heat source of a vehicle seat device.

  According to a fourth invention, in the third invention, the control unit has correlation data of the user's body shape, the rising speed and the stable temperature, and the heater temperature at the start of energization and the heater temperature after a predetermined time has passed since energization. By automatically correcting the temperature setting value according to the body shape of the seated person calculated from the obtained temperature rise curve, it is possible to suppress variations in stable temperature by the seated person.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
In FIG. 1, a heater temperature detector 2 for detecting a temperature signal from a thermistor disposed in the vicinity of a sheet-like heater 1 and a temperature setting for setting the temperature of the heater 1 by a signal from a resistance volume, a changeover switch or the like. Unit 3, control unit 4 that controls the heater temperature, voltage variable unit 5 that varies the voltage supplied to heater 1, power on / off unit 6 that turns on / off the voltage supplied to heater, and ambient temperature And an atmospheric temperature detection unit 7 for detection.

  In the present embodiment, the heater 1 is used as a heating heat source of the automobile seat device.

  About the seat heater control apparatus comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  In FIG. 2, when the seat heating switch 8 is turned on, the control unit 4 turns on the power on / off unit 6 and applies the supply power voltage to the heater 1.

  Thereafter, the control unit 4 detects the supply power supply voltage, calculates a deviation between the heater temperature T1 detected by the heater temperature detection unit 2 at the start of energization and the temperature setting of the temperature setting unit 3, and the heater according to the deviation. The voltage variable unit 5 is controlled to increase the heater voltage so that the temperature rise is the fastest.

  After that, the control unit 4 detects the heater temperature T2 at regular intervals, and when detecting a threshold value that does not overshoot the heater temperature, the control unit 4 reduces the heater voltage, and then variably controls the heater voltage to stabilize the heater temperature. Control.

  In FIG. 3, the control unit 4 automatically corrects the temperature set value according to the room temperature T <b> 3 detected by the ambient temperature detection unit 7.

  Further, in FIG. 4, the control unit 4 detects the body shape of the seated person from the temperature rise curve obtained from the heater temperature T <b> 1 at the start of energization and the heater temperature T <b> 4 after a predetermined time has passed and the body shape and the rising speed correlation data. And the temperature setting value is automatically corrected from the correlation data between the body shape and the stable temperature.

  As described above, in the present embodiment, a heater temperature detection unit that detects a temperature signal from a thermistor disposed in the vicinity of the heater, a temperature setting unit that sets the temperature of the heater, and the heater temperature are controlled. A control unit, a voltage variable unit that varies the heater voltage, a power on / off unit that turns the heater voltage on and off, and an ambient temperature detection unit that detects the ambient temperature, the control unit detects the supply power voltage And calculating a deviation between the heater temperature detected by the heater temperature detection unit and the temperature setting of the temperature setting unit, and variably controlling the heater voltage so that the rise is the fastest while suppressing the overshoot of the heater temperature at the rise. As a result, the heater voltage can be boosted and the rise time can be shortened without depending on the supply voltage, and the heater voltage can be variably controlled to Reduce the overshoot of temperature, it is possible to provide a comfortable feeling to not feel the temperature change when the temperature is stable.

  The ambient temperature detection unit 7 may be provided and connected in addition to the seat heater control device.

  In the present embodiment, the control unit automatically corrects the temperature set value according to the room temperature detected by the ambient temperature detection unit, thereby saving energy while maintaining comfort.

  Further, in the present embodiment, the control unit has correlation data of the body shape, the rising speed and the stable temperature, and is calculated from the temperature rise curve obtained from the heater temperature at the start of energization and the heater temperature after a predetermined time has passed since energization. By automatically correcting the temperature setting value according to the body shape of the seated person, variations in stable temperature by the seated person can be suppressed.

  As described above, the seat heater of the present invention has a fast rise time and can provide a comfortable feeling without feeling a temperature change when the temperature is stable. Therefore, the seat heater is mainly applied to applications such as a heating heat source used in an automobile seat device. it can.

DESCRIPTION OF SYMBOLS 1 Heater 2 Heater temperature detection part 3 Temperature setting part 4 Control part 5 Voltage variable part 6 Power supply ON / OFF part 7 Atmosphere temperature detection part

Claims (4)

A heater temperature detection unit that detects a temperature signal from a thermistor arranged in the vicinity of the heater, a temperature setting unit that sets the temperature of the heater, a control unit that controls the heater temperature, and a voltage variable unit that varies the heater voltage A power on / off unit for turning on / off the heater voltage, and an ambient temperature detection unit for detecting the ambient temperature, the control unit detects the supply power voltage, and the heater temperature detected by the heater temperature detection unit And the temperature setting of the temperature setting unit are calculated, and the heater voltage is variably controlled so that the rise is the fastest while suppressing the overshoot of the heater temperature at the rise. The seat heater according to claim 1, wherein the control unit automatically corrects the temperature setting value in accordance with the temperature detected by the ambient temperature detection unit. An automobile seat device equipped with the seat heater according to claim 1. The control unit has correlation data between the user's body shape, rise speed and stable temperature, and the seater's body shape calculated from the temperature rise curve obtained from the heater temperature at the start of energization and the heater temperature after energization for a predetermined time 4. The vehicle seat device according to claim 3, wherein the temperature set value is automatically corrected in accordance with the vehicle.

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